, is that true? yes, my science advisors, that's why they're here. >> [inaudible]. >> yeah. there are a lot of carcinogens in diesel exhaust, yeah. >> [inaudible]. >> well, you're still seeing an oil that combusts, some of them we know burn more cleanly than others but if it's combusting, you end up with productions of combustion, it may not be better for pollution on the other side, depending on how clean the air burns and that's a theme we end up talking about a fair bit unfortunately is that bio doesn't always mean it's safer, it can, it can definitely mane we're reducing destruction of greenhouse gases but it can still make bad things outs of good ingredients if you know what i mean, another outdoor thing is to reduce your reliance on household pesticides so the active ingredients can be of concern, the pesticide itself, but most pesticide companies done label what are called the inert ingredient, that's the one that's not doing the pest killing per se, they can still really be bad chemicals, endocrine sdrukt tersest can be there, your baby crawls on your lawn, those exposures are out t